- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369813 > LP502 LP502 - AGC-O Compression Preamplifier PDF資料下載
參數(shù)資料
| 型號： | LP502 |
| 英文描述： | LP502 - AGC-O Compression Preamplifier |
| 中文描述： | LP502 - AGC的氧壓縮前置放大器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 102K |
| 代理商： | LP502 |
Patented 1985 Patent Pending Europe 83.300836.0
Canada 1183580 USA 4506169 Japan 58-06886
BLOCK DIAGRAM
Low Distortion AGC
Compression Amplifier
LP502 CUSTOM DATA SHEET
adjustable gain from 0 to 60 dB
0.94 V DC voltage regulator on-chip
attack time fixed at less than 1 ms
release time adjustable from 40 to 500 ms
low input referred noise 1.2
μ
V
<1 % distortion at 10 mV
RMS
output
operates from 1.05 to 3 V
DC
STANDARD PACKAGING
8 pin MICROpac
8 pin PLID
Chip (64 x 62 mils)
Au Bump
FEATURES
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Gennum Japan Corporation:C-101 Miyamae Village, 2–10–42 Miyamae, Suginami–ku, Tokyo
168-0081
, Japan tel. (03) 3334-7700 fax (03) 3247-8839
Document No. HP2802-1
DESCRIPTION
The LP502 is a compression (AGC) preamplifier that consists
of a single-ended input inverting amplifier, with an internal
current controlled resistance connected between input and
output.
By using R
GT
(see test circuit) to vary the value of this current
controlled resistance, the amplifier gain and compression
threshold can be controlled over a range of 60 dB.
The AGC current is derived from a full wave rectifier driven by
a differential amplifier. The attack time of the AGC circuit is
fixed at less than 1 ms. The release time is adjustable from
40 to 500 ms by selecting the value of an external capacitor
(C3).
Internally, a series shunt voltage regulator produces a 0.94 V
DC regulated output voltage. This provides a bias for electret
microphones and permits circuit operations over a wide range
of supply voltages, 1.05 to 3 V
DC
for LP502 without any
degradation of electrical performances.
As compared to the LD502, the LP502 incorporates an
additional diode between the amplifier output and the AGC
filter point. This “attack diode” is responsible for precharging
the AGC filter point, which enables quicker attack time and
helps to reduce the gain overshoot (during transients) that is
observed in the LD502 with certain combinations of AGC input
coupling and filter capacitors. However, with this diode
connected, some level of AGC is always present with higher
output levels even when the AGC input is disconnected.
Therefore the LP502 cannot be used as a “pure” linear
amplifier.
GAIN SET
A OUT
AGC IN
AGC FILTER
GND
A IN
V
REG
V
B
VOLTAGE
REGULATOR
AMPLIFIER
FULL WAVE
RECTIFIER
8
5
6
3
4
7
2
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP502MINI | Application Specific Amplifier |
| LP502PLID | Application Specific Amplifier |
| LP6872 | 0.5W POWER PHEMT |
| LP6872P100 | Packaged 0.5W Power PHEMT |
| LP6872P100-1 | Packaged 0.5W Power PHEMT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP5020G | 制造商:Pentair Technical Products / Hoffman 功能描述:PANEL GALVANIZED , , Zinc 制造商:PENTAIR TECNICAL PRODCUTS 功能描述:PANEL GALVANIZED |
| LP502MINI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Application Specific Amplifier |
| LP502PLID | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Application Specific Amplifier |
| LP503562IS3 | 制造商:Alpha 3 Manufacturing 功能描述: |
| LP-503562-IS-3 | 制造商:BAK 功能描述:BATTERY, LITHIUM POL, 3.7V, 1100 MAH |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。